Tire-repair-vulcanizing device.



F. A. BLANOHARD. TIRE REPAIR VULGANIZING DEVICE. APPLICATION FILED SEPT. 24, 1908.

966,362, Patented Aug.2,1910.

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*rnnnnmon e'. BLANCHARD} or Nonromr Downs, 'Massnomfsnrrs, game or oivn-iacanr TO ALFRED L. BLANCKABD, or NORFOLK Downs, masseonusn'rgs.

To all whom it may concern: Be it known that I, FREDERICK A. BLANCHARD, a citizen of the United States, I residing at Norfolk Downs, "in the county of Norfolk and State'of Massachusetts, have invented new and useful Improvements in Tire-Repair-Vulcanizing Devices, of which the following isa specificatio This invention relates to improvements in tire repair vulcanizing devices, and the object is to effect improvements in the air bag,

so called, which is placed in the tire and which is inflated atter the tire has been placedin a mold for vuleanizing a repaired portion of the tire. Air-bags at resent in use are constructed entirely of abric and rubber and when so constructed are very apt to leak and blow out at the ends, andin addition leaks very often develo between the ends. 'After such failure of t e air bag it is practically impossible to repair the same so that it shall be suliiciently strong and dura- 1 ble and the result is that the tire. Fig. 2 ma section taken on line 2--2 air bag must be thrown aw'a and replaced by a new one. The object 0% my invention is to provide a stronger and more durable air bag than has heretofore been employed and in the attainment of this object I have provided an air bag having caps, preferably formed of metal, inserted in the ends of the bag and detachably secured therein by suitable means and providing a removable inner tube which may be removed through one end, repaired and then replaced.

' Another object of my invention is to provide a device of the class described in which the air bag shall, by its construction-,bc

adaptable to tires of any diameter.

' The invention consists in the combination and arrangement of parts set forth in the following specification and particul 41y pointed out in the appended claims- Referring to the drawing: Figure l is a side elevation, partly broken away and shown partly in section, of a vuleanizing device embodying my invention, a tire being shown in the mold and an air ba in the of Fig. 1. Fig. 3 is an elevation of the air bag, partly broken away to save space, the inflating tube being also partly broken away.

Like numerals refer to like parts throughout the views of the drawing.

In the drawing, 5 is the shoe of a tire which because of a cut or so-called blow-out I plates.

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Specification of Letters iatcnt. Patented Aug, 2, Application filed September 24, 1908; Serial No. 454,586.

the hole with plastic rubber and vulcanizing it has become necessary to repair by filling '5 the same in a well known manner.- The tire is placed in a mold 6 formed injtwo parts which may be connected to each other in any suitable or desired manner and which may be surrounded by any suitabld means for supplying the necessary heat for the vulcanizing. In the tire shoe 5 is anair bag'which comprises-a hollow cylindrical receptacle '7 which in practice is' made upof roperly arranged layers of fabric and rub'er, said receptacle comprising a separate inner tube 8 formed with ntegral ends. In the ends of the receptacle 7 are located caps.9 preferably formed of metal, each of said caps being preferably formed in two parts, namely a. cylindrical. shell 10 havin engagement with an end-p ate 11, said caps being of the proper diameter to tightly t the nterior of the outer tube of the recep tacle-T. Each of the caps 9 is rovided with an annular groove 12 and in a 'nement with these grooves, respectively, are clamp bands or collars 13 encircling the receptacle 7.

The collars 13 may be caused to tightly grip the receptacle 7 by means of bolts l4 14, which when tightened up to the proper extent force a part of the receptacle into the groove 12 and thus the caps 9 are prevented from blowing out when the bag is inflated and leakage of air between said caps and the receptacle 7 is prevented. To one end or" the screw-three ed inner tube 8 is secured a flexible tube 15 and the tire shoe 5 forced against the walls of the mold 6.

It will be understood that in vulcanizing it is necessa-r that the parts to be vulcanized shall be old under compression, and to that end it is necessary to subject the air bag a to considerable internal air pressure to efiect the desired result. By this method of constructing the endsof the air bag not only is leaka e through the ends done away with, but 1 at any time the intermediate portion of the air bag should leak and require repairingthis may be easily. accomplishedby either unscrewing the end' lates 11 or entirely removin the caps. found desirab e to remove only the end One of the end plates having been practice it is capable of adapting itself to tires of any (ii-- ameter.

Having thus described my invention, what Iclaim and desire by Letters Patent to secure is:

, 1. The combination in a device of the class descr1bed,of means adapted to en age the exterior of a tire, and a receptacle a apted to be laced in said tire, said receptacle comprising a flexible outer tube having apertures in its ends, a flexible inner tube contacting with said outer tube along its central portion, and two distinct and independent closures extending across said apertures and detachably attached to opposite ends, respectively, of said outer tube. 2. The combination in a device of the class described, of means adapted to engage the exterior of a tire, a substantially cylindrical flexible receptacle. adapted to be placed in said tire, a flexible inner tube located in said receptacle and contacting therewith along its central portion, and a cap 10- eated in one end of said receptacle to close the same, said cap comprising a cylindrical shell fastto said rece tacle and an end plate detachably 'attache d to said shell whereby said inner tube may. be removed therethrough, said receptacle and tube being adapted to be pressed between said means and said receptacle.

In testimony whereof I have hereunto set I my hand in presenceof two subscribing witnesses.

Y FREDERICK A. BLANCHARD.

Witnesses:

LOUIS A. Jones,

SADIE V. MCCARTHY. 

